Answer:
E
Explanation:
Phytochrome is an important pigment that regulates photomorphogenic aspects of plant growth and development such as seed germination, stem elongation, leaf expansion, formation of certain pigments, chloroplast development and flowering.
Phytochrome has two different chemical structures that are inter-convertible. The forms are named by the color of light they absorb maximally: Pr is a blue form that absorbs red light strongly (660nm) and Pfr is a blue-collar form that absorbs far-red light strongly (730nm). When each phytochrome form absorbs its respective photon, they change chemically into their complementary form.
N.B: In plants, Pfr is the physiologically active or signalling state.
In the dark, phytochrome is in the Pr (inactive) form because at night, Pfr slowly converts back to Pr (inactive form).
The biologically inactive form of phytochrome (Pr) is converted to the biologically active form (Pfr) under illumination with red light. Far-red light and darkness converts the molecule (Pfr) back to the inactive form. Although, it converts back to Pr, slowly in darkness
Answer:
Actually, The reaction is chemical and endothermic. Chemicals A and B form an endothermic reaction, and chemicals C and D form an exothermic reaction. Therefore, chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.
Explanation:
<em>Answer:Well-known legumes include alfalfa, clover, peas, chickpeas, lentils, lupin bean, mesquite, carob, soybeans, peanuts and tamarind.</em>
Answer:
Option (D)
Explanation:
The plants has the ability to undergo the process of photosynthesis. Photosynthesis is defined as the process by which the green plants prepare their own food in the presence of sunlight, carbon dioxide (CO₂) and water (H₂O). The leaves of the green plants contains chlorophyll pigments that consumes the above molecules and helps in converting it into water, oxygen and glucose. This is how plants make their own food and they are considered as the autotrophs or producers. The consumers are dependent on this producers.
Thus, the correct answer is option (D).